This article has so few details in so many words. A committee decided 40 people wasn't enough to call it an epidemic, but there is no information to suggest tha

This article has so few details in so many words. A committee decided 40 people wasn't enough to call it an epidemic, but there is no information to suggest that malice is involved. Have they declared epidemics for smaller clusters? Then there are claims of the number being 350. Is _that_ a lot? Over what time period were the 350 or even the 40 identified?